Measuring large mirrors using SCOTS, the Software Configurable Optical Test System

J. H. Burge, P. Su, G. Butel, R. Huang, A. Maldonado, T. Su

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

Large telescope mirrors are typically measured using interferometry, which can achieve measurement accuracy of a few nanometers. However, applications of interferometry can be limited by small dynamic range, sensitivity to environment, and high cost. We have developed a range of surface measurement solutions using SCOTS, the Software Configurable Optical Test System, which illuminates the surface under test with light modulated from a digital display or moving source. The reflected light is captured and used to determine the surface slope which is integrated to provide the shape. A range of systems is presented that measures nearly all spatial scales and supports all phases of processing for large telescope mirrors.

Original languageEnglish (US)
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation
EditorsColin R. Cunningham, Ramon Navarro, Allison A. Barto
PublisherSPIE
ISBN (Electronic)9780819496195
DOIs
StatePublished - Jan 1 2014
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation - Montreal, Canada
Duration: Jun 23 2014Jun 27 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9151
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation
CountryCanada
CityMontreal
Period6/23/146/27/14

Keywords

  • Astronomical optics
  • Deflectometry
  • Optical testing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Burge, J. H., Su, P., Butel, G., Huang, R., Maldonado, A., & Su, T. (2014). Measuring large mirrors using SCOTS, the Software Configurable Optical Test System. In C. R. Cunningham, R. Navarro, & A. A. Barto (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation [91510Z] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9151). SPIE. https://doi.org/10.1117/12.2057726